Rotax 951 as a pressure washer, in my opinion would make a heck of a pressure washer if able to hook it up to a pump? just crossed my mind as something funny that you would see someone do.
I've actually seen something really neat on the internet. It was a video of this guy who invented a water jet pack. It was tethered to something like a jet ski. The water was forced up through the hose and came out of two nozzles in the back. Similar to the guy you see fly the jet pack but with water. He was limited to the tether that was connected to the jet pump in the water...............:cheers: